/* Compile code without optimization option */
#include <stdio.h>
int main(void)
{
  //const int local = 10;
  const volatile int local = 10;
  int *ptr = (int*) &local;

  printf("Initial value of local : %d \n", local);

  *ptr = 100;

  printf("Modified value of local: %d \n", local);

  return 0;
}
